649802665183 has 8 divisors (see below), whose sum is σ = 743376491552. Its totient is φ = 556415057376.

The previous prime is 649802665157. The next prime is 649802665199. The reversal of 649802665183 is 381566208946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649802665183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649802665133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46547160 + ... + 46561117.

It is an arithmetic number, because the mean of its divisors is an integer number (92922061444).

Almost surely, 2^649802665183 is an apocalyptic number.

649802665183 is a deficient number, since it is larger than the sum of its proper divisors (93573826369).

649802665183 is an equidigital number, since it uses as much as digits as its factorization.

649802665183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93109281.

The product of its (nonzero) digits is 14929920, while the sum is 58.

The spelling of 649802665183 in words is "six hundred forty-nine billion, eight hundred two million, six hundred sixty-five thousand, one hundred eighty-three".